Spiral Flute Tap Thread Size 1/4 In.-20 UNC Overall Length 3 1/8 in High Speed Steel THL Thread Length 3/8 in 75 Percent Thread Drill Size #7 Thread Limit H4 H5 Class of Fit 2B Thread Direction Right Hand Number of Flutes 3MRO428H28
| # | Attribute | Value |
|---|---|---|
| 1. | brand | WALTER PROTOTYP |

